PermissionsWhen the Trojan is being installed, it requests permissions to perform the following actions:

Access information about networks

Open network connections

Check the phone's current state

Monitor, read, create, and send SMS messages

Installation Once installed, the application will display an icon with a white uppercase letter B on a black background.

Functionality The Trojan arrives by pretending to be a legitimate Black Market application.

When the Trojan is executed, it displays the following fake Blackmart Alpha screen as an image:

The Trojan connects to the following URLs:

[http://]www.gainpourtous.com/scrip[REMOVED]

[http://]mathissarox.myartsonline.com

The Trojan may perform the following actions:

Clear the XMBPSP.xml contents in shared preference

Configure the XMBPSP.xml file to send SMS to 81211 or 81308

Set the device to silent mode

Delete SMS received from 81211

Open network connections

Block incoming SMS, encode the body of the message, and post them to the above URLs

Send SMS to 81211 or 81308 if the first ten incoming SMS contain the strings "BD MULTIMEDIA" or "code"

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.

Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.

Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.

Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.

Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.

Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.

If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.

Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.

Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.

Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.